TITLE: 03/15 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: None
SHIFT SUMMARY:
IFO is in NLN and COMISSIONING
Control Room Operation Log 03/15
———————————————————— Shift begin to Nominal Low Noise
15:42 UTC - NLN
16:30 UTC - Erik rebooting Nuc29 due to it flipping on and off - successful
———————————————————— Nominal Low Noise to Lockloss/Lock Attempt 1
17:03 UTC - Lockloss ISI EX Stage 1, 2, SUS EX, SUS TMSX WD tripped due to commissioning (known reason)
17:34 - Resetting WDs reset - Counts got to 136 for LL AC on L2.
- EX bottom 2 stages have not leveled off below the new arbitrary 25 (micron) value. We have contacted Jeff to ask if we can raise the thresholds
- After 30 minutes and still no ringing, thresholds are still above 100 but oscillating lower
- We are thinking of adjusting the threshold to get to locking, due to commissioning. (screenshot below).
- Pressed the reset button again and values went from 100s to sub unity very quickly
- I wonder if pressing it initially tried damping and then when in a more damped state, re-pressing was much more effective? (screenshot 2)
- I didn’t know nor think that the reset button activates damping? What’s going on here?
- Issue passed off to Jeff and Oli, who worked on this change (data counts to micron units) recently.
- Jeff responded saying that the damping loops do take care of the ring-up after the WD is tripped - just need to press it sooner.
- Pressed the reset button again and values went from 100s to sub unity very quickly
17:36 - Started locking - stopping at Damp Bounce for some commissioning tests (Jennie and Craig)
17:55 - Guardian restarted with NEW_DARM being the new (nominal) DARM.
18:02 - BS touched by Georgia in order to improve BS - but went into MICH_FRINGES before much movement
18:05 - Lockloss at CHECK_MICH_FRINGES - relocking now.
18:07 - Pointed out by TJ, and trended to confirm - the ALS X TRX is much lower than the last few lock attempts. It was hovering around 1.2 yesterday and is maxing at 0.7 today despite a high comm beat note (~6). This might warrant an initial alignment if the current lock attempt fails.
18:25 - BS moved by Georgia to acquire PRMI - success
18:26 - DRMI Locked
18:32 - Lockloss DRMI
———————————————————— Lock Attempt 1 to Init Align
18:32 - Initial Alignment Started
18:40 - Initial Alignment Strangeness - while ALS locked for both arms, the WFs took a while to offload, keeping us in this state for longer than expected - alogged by Camilla (alog 76423)
18:47 - ALSX Transmission values are back to what they were yesterday - around 1.2. Expecting this to fix DRMI locking issues.
19:02 - Initial Alignment Complete - requested CHECK_VIOLINS_BEFORE_POWERUP for Jennie/Craig to run their tests.
———————————————————— Init Align to Lock Attempt 2
19:21 - Reached CHECK_VIOLINS_BEFORE_POWERUP for Jennie to take her measurements.
19:26 - Tests done, NLN requested
19:29 - HAM7 WD Tripped - potentially due to SQZ work - requested pre-squeeze state - ADS_TO_CAMERAS. Camilla letting Naoki and Nutsinee know - checking WD now.
19:34 - WD reset successfully.
19:40/1 - Requested and reached TRANSITION_FROM_ETMX for commissioning work.
19:54 - Lockloss - DRMI unlocked (reason not immediately apparent)
———————————————————— Lockloss to Lock Attempt 3
20:30 - Lockloss - DRMI unlocked at LOWNOISE_ASC (Alenna caused via changes made in that state)
20:47 - Gerardo informed the control room that the computing room across from the control room had a loud fan and that the back wall was vibrating - informed facilities and Tyler is investigating. Nothing was wrong according to Tyler and Eric.
21:18 - Locked and in NOMINAL_LOW_NOISE
———————————————————— Nominal Low Noise to Shift End
22:38 - Craig Running CARM Injection Tests
22:48 - Craig’s Tests done - preparing for future injections
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 17:25 | VAC | Jordan, Gerardo | LVEA | N | Cart Transport | 17:39 |
| 18:28 | FAC | Tyler | MY | N | Roof inspection | 19:28 |
| 19:11 | SQZ | Daniel, Nutsinee, Naoki | LVEA | N | Switch | 19:41 |
| 19:41 | CDS | Erik, Marc | EX | N | Environmental Protection Procurement (jacket) | 20:05 |
| 20:01 | SQZ | Nutsinee | LVEA | N | Quick Measurement | 20:06 |
| 22:12 | PSL | Craig, Matthew, Graeme | LVEA | N | CARM Injection Preparation | 23:12 |
